Air hose connection



Feb. 27, 194D. Y J, NELSON l I 2,191,579

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TToRNEys `listened Feb. `27, 1940 i UNITED *STATES PATENTv OFFICE f y l 2,191,579 'l v 'Am nosn CONNECTION John J. Nelson, Birmingham, Ala. Application September 9, 1937, Serial No. 163,112.2

1 Claim.

This invention relates to` an improved air hose connection, the primary object of the invention being toprovide a-Iquick acting connection which may be readily and easily operated, and one which will securely hold the air hose to the stem Or tube with whichit is used.

An important object ofy the invention `is to provide a connection especially designed for use in curing inner tubes of pneumatic tires, the connection being one which will insure the free passage of air to the valve and one which will insure against leaks which usually cause a blast of air'to be directed against the lug of the mold resulting in the coolingof the lug and the effective curing of the tube.

With the foregoing and other Objects in View, which will appear as 'the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed,y it being *understood that changes in the precise embodiment of the invention herein described, may be made within the scope of what is claimed, without def parting from the spirit of the invention. y

Referring to the drawing: f v y Figure 1 is an elevational 'view of a hose 'connectiony constructed in accordance with the invention. f

Figure 2 is a View .Of the air hose coupling partly in section. y

Figure 3 is a sectional View through one of the end members Of the connection. 1 l Figure 4l is a sectional view through the central section of the coupling.

\ Figure 5 is a sectional view through the valve y with which the` coupling is used.

Referring tothe drawing in detail, the hose l coupling', which is of the quick acting type, includes a central section 5 which vis tubular in formation and formed with internal threads 6. 'An

. l opening l is formed in the central section 5 and accommodates `the lever 8, which is pivotally mounted On the pin 9 thatvextends acrossthe opening 1.

As shown, the inner end of the lever 8 is beveled providing a sharp end adapted tO engage within the threads of `the valVe stern l0 of they inner tube beingcured and since the lever 8 is mounted laterally of a vertical line drawn intermediatev the ends of the opening 1,*it will be seen that when the coupling is being positioned over a valve stem, the lever may be swung from the l the valve stem of position shown in the' ri'lrawing to a position wherein the pointed, end of lthe leverl will lie f within the opening 1. yIt follows that upon reverse movement of the lever 8l the pointed end 'thereof win be wedged against'the threads cf the si valve steml holding the coupling in position. I

The reference character II designates the air hose nozzle which is formed with internal threads toreceive the threaded extension I2 of the 'nip- I4. This nozzle 10 l into the valve stem I0, as shown by FigureZ `of the drawing. An opening I1 is provided in the central section 5, which opening establishes'com- 20 munication between, the interiorv of the central section and atmosphere, the Opening being normally closed when the elements of the coupling have been properly connected, however, `should the coupling become slightly loose, the air which 25k would otherwise be directed against the curing mold cooling 'the mold, will bedirected laterally away from the mold.

vFrom the foregoing it will be seen that due to the construction shown I and.v described,` an air 30 hose may be readily and securely connected with anA inner tube being cured with the result that the coupling will not become disy placed, when air pressure is directed tO the tube. 35

I claim: i

A coupling for connecting `an air hose to a valve stem comprising in combination, a hollow nozzle section adapted to be secured to the air hose, said nozzlesection having an Opening in the wall thereof, a lever pivotally mounted within 40 the opening at a point adjacent to the forward end of the Opening, the inner end of the lever adapted to engage the threads of the valve stem over which the nozzle section ispositioned at a point in advance' of the pivot point of the lever, 45

whereby air pressure directed to the valve stem acts lto force the coupling rearwardly and wedge the inner end of the lever into engagement with the threads of the valve stem and force the lever against one edge of the Opening, securing the cOu- 50 pling on the valve stem.

l JOHN J. NELSON. Y

the nozzle, it will be 15 

